Oil burner



July 21, 1931.

H. C., ROBINSON OIL BURNER Filed March 10, 1930 2 Sheets-Sheet 1 A iiorney July 21, 1931. H. c. ROBINSON OIL BURNER 2 .Sheets-Sheet 2 Filed March 10, 1930 I In venior ertdfiabz'zzswg Zia/3 A ttomey Patented July 21, 1931 r'r'r orrics HUBERT C. ROBINSON, OF DALLAS, TEXAS OIL BURNER Application filed March 10, 1930. Serial No. 434,637.

This invention relates to an oil burner characterized by certain improvements and refinements as contrasted with a similar oil burner shown in Patent 1,701,484, granted February 5, 1929.

In carrying the present invention into practice, I have evolved and produced a novel structural organization which is simplified and distinguishable in that it involves the utilization of a novel revision in structure, wherein the parts are especially shaped and mechanically co-related to better fulfill the requirements of a burner of this class. v It is my aim to generally improve upon the aforesaid patent, and similar patented and marketed burners by providing one which is susceptible of consuming low-grade fuel oils, and to accomplish this result through effective co-mingling and mixing of the oil vapors and air, whereby to develop a highly combustible fuel susceptible of producing an intensely hot and continuous flame.

The specific details and their relative arrangement and association will become apparent from the following description and drawings.

In the drawings:

Figure 1 is a top plan view of the principal parts of the burner as constructed in accordanoe with the present invention.

Figure 2 is a central vertical sectional view through the same with parts shown in elevation.

Figure 3 is a horizontal section on the plane of the line 33 of Figure 2.

Figure 4 is a similar sectional view on the line 44 of Figure 2.

Figure 5 is a view observing the discharge end of the cast body.

Figure 6 is a view of the opposite end of the body showing the uncovered ignition hole.

Figure 7 is an elevational view of the slide cover plate removed. 3 The entire assembly may well be seen in Figure 2. The casting 8 is in the nature of a hollow box-like body which is shaped to define an eificient mixing and combustion chamber. The top 9 is substantially flat. The *rear end portion is rounded somewhat as indicated at 10 in Figure 1 and the bottom is of curvate form as indicted at the point 11.

The end 12 is completely open and substantially rectangular in configuration. This is the flame discharge end. At the opposite end 10 is an ignition hole 13 and on the exterioris a U-shaped rigid guide 14 which is constructed to provide a keeper for holding the cover plate 15 in place. This cover plate is of the configuration shown in Figure 7 and includesa finger hook 16 to facilitate manipulation. Incidentally, I propose to insert a wad of cotton or the like therein and to ignite the cotton through this hole to start the burner into operation. Y

There is a hole 17 in the bottom of the body defining what may be designated as a secondary atmospheric air inlet, and arranged in alinement with this and projecting into the interior of the body is a hollowstandard 18 having suitably shaped air intake slots 19. The top 20 of the standard is formed cally over this annulus and provided with'a v multiplicity of air inlet openings 26'. 7

The numeral27 designates a cylindrical tubular nozzle which extends down through the housing and into the main inlet hole, the upper end of this nozzle having a lateral connection 28 in which the oil supply pipe 29 is connected. It will be observed that the fan shaft extends upwardly through the nozzle and is journalled in a bearing hole in the top of the nozzle as seen clearly in Figure 2. This provides the desired mounting. for the ignition fan. 5

The gist of the invention, it will be seen, is in the novel assemblage of parts comprising the flat top, open-ended box defining-a suitable mixing and combustion chamber, said box having the primary air inlet opening in its top surrounded by the upstanding rim constituting the retaining means for the apertured cup-like housing. The housing con- '5 stitutes a novel mounting and suspension means for the nozzle which depends into the main air inlet and terminates within the rim 24.

On large burners, the secondary air inlet 17 is located axially beneath the main air inlet and this is important as it afiords addi-v tional supply of air. Then too, there is novelty in the utilization of the upstanding hollow conical standard which functions as aprimary bearing for the lower pointed end of the rotary, fan shaft. This arrangement affords concentration of mechanism and systematizes the location of parts for facility in operation. 29... This being a natural draft burner, the primary air passes through the; air inlet holes 26 in the housing and then down through the main air inlet opening .in the top of the box, causing the mixing: and spraying fan to 2 .,revolve at relatively highrates of speed,

The fuel linefor the oil, indicated at 29, functions under the action of gravity and is controlled by a suitableregulating valve (not shown).

30 The lighting of the burner is simple and expeditious. I simplyplace ,a piece of waste or cotton into the borl 8 through the ignition 1 hole 13, at which timethe -plate.15 is open.

A'small amount of oilis allowed. to drip 35,.through1 the nozzle onto the-waste and to saturate it to a sufficient degree. I then light the saturated waste. material,.letting-thisburn for a second, atrwhich time, the door.

15 is closed.

andrall-ow a small portionoftheoil todrip surrounded by an upstanding annular rim, said body being open at one end to provide a flame discharge, having an ignition hole at the opposite end and a closure therefor, the bottom of the body being formed with a secondary inlet and an upstanding hollow conical standard provided with air passages, the top of said standard-being formed with a socket constituting a bearing, an apertured housing fitted telescopically over said rim, a nozzlefastened to said housing and depending down to the housing and into the air inlet, a fuel feed line connected with said nozzle, and a fan located in said body adjacent said air inlet and having a vertical shaft, the lower end of the shaft being journalled for rotation in the socket in said standard, the upper end portion of the shaft extending through the nozzle and being j ournalled for rotation in a bearing .hole'formed-Bs in the top of the nozzle.

In testimony whereof I afiix my signature.

HUBERT "C. ,BOBINSONJI' through the nozzle against ,theflaming waste,-. causingthe desired .vaporization..:of .fuel.

The oil vapors mix with the incoming air and 45.,the natural suction developed'therein. produces the desiredmixing and developing-of highly combustible. fuel.

This burneiican be installed easily. in any stove, furnace, stack, boiler, or thenlike, and 50,.used for heatingor power, and: it willsave fifty per cent of fuel, it is believed.

his thought that persons skilled in the art.

to which.the invention relates will be able toobtain a clearunderstanding oftheinven- 55..tion after considering the description in connection with...the. drawings. Therefore, a more lengthy. description is regarded-asun necessary.

actual practice if desired;v I claim:

1111a burner of the class described, a 1101- T V 5 :low bodyhaving ;a ,main: air inlet atiits. top; 

